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| <nowiki><script type="text/javascript" language="JavaScript">
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| var maxday=new Array(12)
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| maxday[1]=31
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| maxday[2]=28
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| maxday[3]=31
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| maxday[4]=30
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| maxday[5]=31
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| maxday[6]=30
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| maxday[7]=31
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| maxday[8]=31
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| maxday[9]=30
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| maxday[10]=31
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| maxday[11]=30
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| maxday[12]=31
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|
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| var monthname=new Array(12)
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| monthname[1]="January"
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| monthname[2]="February"
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| monthname[3]="March"
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| monthname[4]="April"
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| monthname[5]="May"
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| monthname[6]="June"
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| monthname[7]="July"
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| monthname[8]="August"
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| monthname[9]="September"
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| monthname[10]="October"
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| monthname[11]="November"
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| monthname[12]="December"
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|
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| function calc(form){
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| var newmonth,newday,newyear
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| day=form.Day.value
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| year=form.Year.value
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| month=form.Month.value
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| newday=eval(day)+7
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| newmonth=eval(month)-3
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| newyear=eval(year)
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| var max=maxday[month]
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| if(month==2&&(year%4==0)){max=29}if(day>max){datestring="Wrong date, please correct and recalculate"}else{if(newday>max)
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| {newday=newday-max
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| newmonth=newmonth+1}
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| if(newmonth<1){newmonth=newmonth+12}else{if(newmonth>12){newmonth=newmonth-12}newyear=newyear+1}var max=maxday[newmonth]
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| if(newday>max){newday=newday-max
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| newmonth=newmonth+1}
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| var datestring=monthname[newmonth]+" "+newday+", "+newyear
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| }
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| form.due.value=datestring
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| }
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|
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| function today_click()
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| {
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| var theForm = document.info;
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| var nowDate = new Date();
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|
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| theForm.Day.options[nowDate.getDate() - 1].selected = true;
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|
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| theForm.Month.options[nowDate.getMonth()].selected = true;
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|
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| theForm.Year.options[nowDate.getFullYear()- 2005].selected = true;
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|
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| }
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|
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| </script>
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|
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| <center><noscript>NOTE: You need Javascript to use the calculator, which your browser has apparently disabled.</noscript>
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| <div id="calcdiv" align="center"><form name="info"><p>When did your last period begin?
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| <select name="Month" size="1"> <option selected value="1">January</option> <option value="2">February</option> <option value="3">March</option> <option value="4">April</option> <option value="5">May</option> <option value="6">June</option>
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| <option value="7">July</option> <option value="8">August</option> <option value="9">September</option> <option value="10">October</option> <option value="11">November</option> <option value="12">December</option>
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| </select><select name="Day" size="1"> <option selected value="1">1</option> <option value="2">2</option> <option value="3">3</option> <option value="4">4</option> <option value="5">5</option> <option value="6">6</option> <option value="7">7</option> <option value="8">8</option> <option value="9">9</option> <option value="10">10</option> <option value="11">11</option> <option value="12">12</option> <option value="13">13</option> <option value="14">14</option> <option value="15">15</option> <option value="16">16</option>
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| <option value="17">17</option> <option value="18">18</option> <option value="19">19</option> <option value="20">20</option> <option value="21">21</option> <option value="22">22</option> <option value="23">23</option> <option value="24">24</option> <option value="25">25</option> <option value="26">26</option> <option value="27">27</option> <option value="28">28</option> <option value="29">29</option> <option value="30">30</option> <option value="31">31</option>
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| </select><select name="Year" size="1"> <option value="2005">2005</option> <option selected value="2006">2006</option> <option value="2007">2007</option> <option value="2008">2008</option> <option value="2009">2009</option> </select><br> <br>
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| <input type="button" value="Insert today's date" onclick="today_click()" style="background-color:#ddddff">
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| <input type="button" value="Calculate" onclick="calc(this.form);return true;" style="background-color:#ddddff"><input type="reset" value="Reset" style="background-color:#ddddff"><br> <br>
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| <p>Your approximate birth (due) date is:<br> <input type="text" size="18" name="due"></form>
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| </center></nowiki>
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